4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Andrey Konovalov <andreyk...@google.com> commit 12c8f25a016dff69ee284aa3338bebfd2cfcba33 upstream. KASAN uses the __no_sanitize_address macro to disable instrumentation of particular functions. Right now it's defined only for GCC build, which causes false positives when clang is used. This patch adds a definition for clang. Note, that clang's revision 329612 or higher is required. [andreyk...@google.com: remove redundant #ifdef CONFIG_KASAN check] Link: http://lkml.kernel.org/r/c79aa31a2a2790f6131ed607c58b0dd45dd62a6c.1523967959.git.andreyk...@google.com Link: http://lkml.kernel.org/r/4ad725cc903f8534f8c8a60f0daade5e3d674f8d.1523554166.git.andreyk...@google.com Signed-off-by: Andrey Konovalov <andreyk...@google.com> Acked-by: Andrey Ryabinin <aryabi...@virtuozzo.com> Cc: Alexander Potapenko <gli...@google.com> Cc: Dmitry Vyukov <dvyu...@google.com> Cc: David Rientjes <rient...@google.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@kernel.org> Cc: David Woodhouse <d...@amazon.co.uk> Cc: Andrey Konovalov <andreyk...@google.com> Cc: Will Deacon <will.dea...@arm.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Paul Lawrence <paullawre...@google.com> Cc: Sandipan Das <sandi...@linux.vnet.ibm.com> Cc: Kees Cook <keesc...@chromium.org> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Cc: Sodagudi Prasad <psoda...@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- include/linux/compiler-clang.h | 3 +++ 1 file changed, 3 insertions(+) --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -17,6 +17,9 @@ */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) +#undef __no_sanitize_address +#define __no_sanitize_address __attribute__((no_sanitize("address"))) + /* Clang doesn't have a way to turn it off per-function, yet. */ #ifdef __noretpoline #undef __noretpoline
